Strap fastener for eyeglasses



- H. A. SANGREN STRAP FASTENER FQR EYEGLASSES Filed April 18. 1922 INVENTOR H-A. e/wapav F/GJZ BY m W MM'J ATTORNEYS Patented Get. 23; 1923.

* 1 4715 a. r QFFICEL ,f

HARRY A; SANGREN, or S'O-UTHBRIDGEQ OPTICAL COMPANY, OF SOUTH' BRIDGE,

TION OF MASSACHUSETTS.

MASSACHUSETTS; AssIGNjon'mo aMERIoAit MASSACHUSETTS, A VOLUNTARY ssocra STRAP rnsrnnna FonEYEGLAssE's:

Application filed April is, 1922-. Serial No. 555,203;

To (all whom it may concern: Y 7

Be it known. that I, HARRY A. SA c n-N, a citizen of the United statesyresiding at Southbridge, in the county of Worcester and curely retain the lenses in their proper relative positions with'respect to the nosepiece and frame.

A further object of the invention is-the provision of a fastening: device including a resilient stirrup having a portion thereof engaging thestrap. with an additional portion engagingtheheaded pin extended throughthe lens, with curved portions intermediatethe above mentioned portions whereby any tendency on the part of the strap-engaging portions to spread will bring the pin-engaging portions tightly against curely retainthe various parts of the fastener in their respective positions; I

Another object of the invention is the pros vision of afastening device of the above ,character whereby a reliable connection can be made between the nose bridge or frame and the lenses, said connection: being formed of such material and so arrangedthat it can be quickly and: readily applied to the'lenses and nose piece or frame or detached therefrom. I

A still. further object of the invention is the provision of a connection between the nosepiece or frame and the'lenses wherein a resilient stirrup is employed so that when the lenses are'fastened in their respective positions both the lenses and the straps of the parts to whichthe' lenses are attached will be j oin'edtightly togetherand eliminate any loose playbetween theilenses and the frame or nosepiece. 1 With the above and other objects in view the invention consists in :theinovel features of construction and the combination and arrangeinent of parts hereinafter more fully thepin-so as to sestrap and theirby pressing fastens the strap to I the set forth, pointed out in, the {mi e and shown whichi Figure I'is a front elevationofa pair of eyeglasses constructed in accordance with my inventlon;

igure II is a: detail e'levatifon, parts;

thereof being broken away and illustrated in section; v; a Figure IIIis a transverse sectional View taken on the line III-III- of Figure II-;-' I

Fi u IV i ofthe fastening stirrup;

Figure V is a 'vertlcal sectional view taken detailed perspective view p in the accompanying drawings, in

through the nosepieeestrap illustrating aslightlymodified for-mof the invention; and

Figure VI is a.detailed sideelevation; of

one fastener,

eferring now more particularly to the drawingsin which any invention is fully illustrated, the numeral 1 indicates the lenses, and} arranged between the lenses is the nose bridge '2 having lens-engaging. v H *straps'ii-n' the present instance being, channel-shapedi' straps 3 at eachend thereof, said to provide the parallel flange portionst adapted to engage the opposed faces of the lens whereby to prevent any lateral move ment onthe part of the straps when placedin their respective positions asshownin Figures I and IL My improved! in fastening the connectediby the crosspieces 6. Iii-applying the stirrup for use in forming a'connection between the lens partsthereof. being broken away and illustrated in section;

and the strap 3; the cross resilient stirrup employed strap tothelens comprises two spaced V-shapedmembers 5"integral-ly portions 6 are engaged over the ends of the" these cross portionstoward each other the looped ends? of the stirrup ill-be forced outwardly for en gageinent with the grooves S'forrned at each endaof the'sec'uring pin 9. ranged within the-"openin used in lens;

looped portions 7- are engagedwith the grooves 8 of the pin 9 the cross portions 6;

are released, the resiliencyeo-f themembers POI'tlOIlS; away from each 7 5 moving saidcros's other toward the ends of the-strap.

In order on the part This pin-9 is ar gin-the lens and is place of the ordinary screw; Which,

After the to prevent any inward movement of the cross portions 6 the straps each other, the slightly curved 'w1ll tend to force these cross portions away from each other so that itmay be possible to permit'the cross portions to move away from each other at a point beyond the channels 10 and still be e ective in retaining the loop '7 in engagement with the pin 9, but at the same time these curved portions 5 will tend to resist any inward movement on the part of the cross portions 6 so that it will be rather difficult for these cross portions to move inwardly towarcteach other beyond the cross channels 10 and thus the loops 7 will be securely retained in engagement with the pins 9. v

In Figure V I have illustrated a slightly modified form of the invention wherein the flanged portions 4 on the straps are eliminated, and in place of these flanged portions a spur member is formed on the inner face of the strap and adapted to engage within a notch 12 formed in alinement with the pin-receiving opening in the lens. This spur 11 is preferably for the purpose of preventing any lateral movement on the part of the strap when fastened by means oi the resilient stirrup to the headed pin 9.

In Figure VI 1 have illustrated another form of theinvention wherein I provide two spaced studs 13 adapted to engage within similarly shaped notches formed in the edge of the lens 1. These studs 13 are preferably arranged in equal distance upon opposite sides of the pin 9 so as to prevent any turning or lateral movement on the part of the strap ,3, the cross portions 6 of the stirrup retaining the straps 3 against any move ment circumferentially oi the edge of the lens.

From the above description taken in connection with the accompanying drawings it will be readily apparent that l have provided a reliable and efficient connection between the nosepiece or frame and the lenses which can be quickly and readily applied and which at the same time will serve to retain the lenses in their proper positions with respect to'the nose piece or trame. In placing the stirrup in position, the cross portions 6 can be moved toward each other upon the strap 3 until the looped portions 7 engage within the channels 8 formed at the ends of the pin'9. Upon release of cross portions 6 the resiliency within the curved portions 5 will tend to force the cross portions 6 away from each other and to draw the looped portions 7 into contact with the channels 8, thus secur ng the stirrup in poa pin carried thereby, a strap sition and at the same time providing for suificient resiliency in the curved portions 5 whereby to permit a slight movement on the part of the stirrup without in any way changing the position or" the lenses.

1 claim:

l. A device of the class described, including in combination a lens, a strap engaging the edge of the lens, a resilient stirrup including spaced ll-shaped members adapted to be arranged upon opposite sides of the lens, cross portions connecting said Vsshaped members and having engagement with the strap, looped portions at the ends of the V- shaped members and a pin carried by the lens having its ends channeled and engaged with said looped portions.

' 2. A device of the class described, includa lens, a pin carried thereby having a channeled portion at each end forming a head, a strap engaging the edge or" the lens, flanges carried by the strap and engaging opposed faces of the lens, a resilient strap having portions thereof engaging the ends of the pin, and additional portions engaging the strap as and for the purpose set forth.

3. A device oi the class described includ ing in combination a lens, a headed pin carried thereby, a strap en aging the edge of the lens having transverse channels in its outer face, a resilient stirrup comprising opposed V-shaped portions, cross members connecting said V-shaped portions, said cross members being adapted to be forced toward each other for engaging the ends of the side portions with the headed pin, and means for limiting the movement of said cross portions upon releasing the same.

4. A device as indicated, including a lens engaging the edge of the lens, a resilient stirrup having transverse members overlying the exterior edges of the strap adjacent its extremities and provided with converging parts on opposite sides of the lens with operative connections with the opposite ends of the pin whereby the transverse members of the stirrup may bear yieldably upon and retain the ends of the strap against the edge of the lens.

5. A device asindic-ated, including a lens, a pin with its opposite ends headed, carried thereby, astrap engaging the edge of the lens, a resilient stirrup having transverse members overlying and bearing against the exterior edge of the strap adjacent its entreinities, parts on opposite sides of the lens with operative connections with theheads of the pin whereby'the transverse members may bear yieldably upon and retain the strap against the lens edge, said operative connections be ing detachable. without removing the pin.

naanr A. sanders.

and provided with converging 1 

